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Contents
module Spree
module TaxCalculator
# Default implementation for tax calculations on shipping rates.
#
# The class used for shipping rate tax calculation is configurable, so that
# the calculation can easily be pushed to third-party services. Users
# looking to provide their own calculator should adhere to the API of this
# class.
#
# @see Spree::Tax::ShippingRateTaxer
# @api experimental
# @note This API is currently in development and likely to change.
# Specifically, the input format is not yet finalized.
class ShippingRate
include Spree::Tax::TaxHelpers
attr_reader :shipping_rate
# Create a new tax calculator.
#
# @param [Spree::ShippingRate] shipping_rate the shipping rate to
# calculate taxes on
# @return [Spree::TaxCalculator::ShippingRate]
def initialize(order)
if order.is_a?(::Spree::ShippingRate)
Spree::Deprecation.warn "passing a single shipping rate to Spree::TaxCalculator::ShippingRate is DEPRECATED. It now expects an order"
shipping_rate = order
@order = shipping_rate.order
@shipping_rate = shipping_rate
else
@order = order
@shipping_rate = nil
end
end
# Calculate taxes for a shipping rate.
#
# @return [Array<Spree::Tax::ItemTax>] the calculated taxes for the
# shipping rate
def calculate(shipping_rate)
shipping_rate ||= @shipping_rate
rates_for_item(shipping_rate).map do |rate|
amount = rate.compute_amount(shipping_rate)
Spree::Tax::ItemTax.new(
item_id: shipping_rate.id,
label: rate.adjustment_label(amount),
tax_rate: rate,
amount: amount
)
end
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems